Database Administration (MOSC)

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Rman question !?

edited Nov 4, 2014 10:04AM in Database Administration (MOSC) 3 commentsAnswered

Hi,

I have a question.

In Rman, Redundancy is the number of backup pieces required to bring up the database in case of any crash/failures.

and by recovery window, it is the number of days the rman will retain the enough backup pieces that can restored and recovered to any point of time failure within the specified recovery window.

My doubt is Which parameter have upperhand on this ?

For example in the scenario: If I specify redundancy to be 5 and recovery window to be 7 days and incremental backup runs everyday:

incremental backup of first 2 days will be obsolete as per redundancy set, but those backup pieces will continue to stay with rman as recovery window is set for seven days though the first two days of backup are marked obslete (Since redundancy is set for 5)

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